Electromagnetic type energy feedback shock absorber based on Halbach permanent magnet array

Abstract

The invention discloses an electromagnetic type energy feedback shock absorber based on a Halbach permanent magnet array. Multiple groups of coil windings are arranged in an outer barrel of a belt trough, which is made of soft magnetic materials, and are introduced into and led out of a rectifying circuit via a lead; an inner barrel is provided with a Halbach permanent magnet array consisting of annular permanent magnets of different polarization directions; and the inner barrel and the outer barrel are connected by a spring. When the shock absorber is installed on a driving automobile suspension, axial relative displacement is generated between the inner barrel and the outer barrel by pavement vibrational excitation action transferred by an axle or wheels, and a coil winding magnetic linkage in the outer barrel is changed to generate induced electromotive force. Because the Halbach permanent magnet array has an obvious single-side strengthening characteristic, a magnetic field of which one side is provided with enhanced magnetic induction intensity is in sinusoidal distribution and has a small higher harmonic; and therefore, the absorber has the advantages of small volume, small quality and good energy recovery performance.

Description

technical field [0001] The invention relates to an electromagnetic energy-feeding shock absorber based on a Halbach permanent magnet array, which can charge the recovered energy to a vehicle battery, supply energy to a vehicle electrical appliance or be used for active vibration control of a suspension, and belongs to vibration energy recovery technology field. Background technique [0002] At present, the traditional automobile suspension shock absorber uses fluid viscous damping to absorb and dissipate the kinetic energy of vertical motion. Engine output power is consumed by such conventional shock absorbers. Therefore, it will be a future development trend to consider energy-feeding shock absorbers from the perspective of energy saving and environmental protection. At present, some scholars have begun to study the energy-feeding shock absorber of automobile suspension, which are mainly divided into two working modes: hydraulic type and electromagnetic type, but there ar...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the energy loss of traditional shock absorbers and the disadvantages of complex structure and low energy recovery performance of general energy-feeding shock absorbers, the present invention proposes an electromagnetic energy-feeding shock absorber based on Halbach permanent magnet array. The shock absorber not only has all the advantages of the linear motor shock absorber, but also cancels the yoke between the permanent magnets inside the structure, reduces the volume of the permanent magnets, has better energy recovery performance, and has a simple and reliable structure

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